An effort at elucidation-
While John Edwards has ben able to garner considerable votes in the first three states, the media narrative is now turning (some Edwards supporters have said this all along) into a Obama v. Hillary match.
The question becomes, given that Edwards has stated he has no intention of pulling out any time soon, how might he support in the future. Richardson has held his endorsement to himself. I wonder if there have been any indications to whom Edwards might hand his delegates to one or the other.
Were that the case, he's truly be kingmaker. I am not aware of any facts which indicate how this process would work (assuming Edwards EVER drops out), to whom he would give his delegates, and whether the delegates he has now are bound to get behind whomever Edwards may choose.